[android-developers] Override enableMyLocation in MyLocationOverlay

[gallagth]

Hi everyone,

I want to override the method enableMyLocation() in MyLocationOverlay
class, in order to implement my own positioning algorithm to get
latitude/longitude, and then plot them onto a MapView.

I figured out how to do that, but now I'm stuck because I dont know
what Canvas to pass when I call the method drawMyLocation().

Here is the MyLocationOverlay class:

public class LocationOverlay extends MyLocationOverlay implements
LocationListener,GpsStatus.Listener{

        Bitmap circleIcon;
        private MapView mapView;
        private OutdoorMap outdoorMap;
        private Context context;
        private LocationManager locationManager;

        public LocationOverlay(Context context, MapView mapView) {
                super(context, mapView);
                this.mapView = mapView;
                this.context = context;
                circleIcon =
BitmapFactory.decodeResource(context.getResources(),R.drawable.circle);
        }

        @Override
        public boolean enableMyLocation() {

                locationManager = (LocationManager)
context.getSystemService(Context.LOCATION_SERVICE);
                start();
                return true;
        }

        @Override
        public void onLocationChanged(Location loc) {

                // Here want to call drawMyLocation but I dont know
what Canvas to pass to it
                this.drawMyLocation(canvas, mapView, loc, new   GeoPoint((int)
(loc.getLatitude()*1000000)
                        ,(int)(loc.getLongitude()*1000000)), loc.getTime());

        }

        public void start() {
                // Register for location updates.
                LocationProvider prov =
locationManager.getProvider(LocationManager.GPS_PROVIDER);
                if (prov != null) {
        
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
0, 0, this);
                        locationManager.addGpsStatusListener((Listener) this);

                        Location prime =
locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);

                }
        }

        public void stop() {
                LocationProvider prov =
locationManager.getProvider(LocationManager.GPS_PROVIDER);
                if (prov != null)
                        locationManager.removeUpdates(this);
        }

        @Override
        public void onGpsStatusChanged(int event) {

        }
}

Thanks very much for your help.

Cheers

-- 
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en